US8395354B2ActiveUtilityA1

Power supply/charger

62
Individually held — no corporate assignee on recordPriority: Jul 21, 2010Filed: Jul 21, 2010Granted: Mar 12, 2013
Est. expiryJul 21, 2030(~4 yrs left)· nominal 20-yr term from priority
Inventors:Joseph B. Sainton
H02J 7/342H02J 7/00
62
PatentIndex Score
2
Cited by
4
References
17
Claims

Abstract

An electronic circuit that is normally used in a car cigarette lighter adapter is disclosed. It is designed to meet the high performance requirements of the Apple Computer specification for charging iPod and iPhone, while still retaining low cost. The circuit is composed of input protection components, surge regulator, FET switch, inductor-capacitor smoothing filter, gate drive components, voltage regulator, current regulator, current sense element, and voltage reference.

Claims

exact text as granted — not AI-modified
1. An efficient power supply/charger comprising:
 an input protection component to protect an input voltage from short circuit in the power supply/charger; 
 a surge regulator to regulate the input voltage; 
 a voltage controller component to control an output voltage; 
 a current limiting component to limit a current through the power supply/charger; and 
 a cable compensation component to compensate the voltage drop through a cable. 
 
     
     
       2. An efficient power supply/charger as in  claim 1  wherein said voltage controller component further comprises of a power output component and a gate drive. 
     
     
       3. An efficient power supply/charger as in  claim 1  wherein said input protection component comprises of a 2 amp positive temperature coefficient thermistor. 
     
     
       4. An efficient power supply/charger as in  claim 1  wherein said input protection component comprises of a positive temperature coefficient thermistor trace fuse. 
     
     
       5. An efficient power supply/charger as in  claim 1  wherein said input protection component comprises of a 1 uF capacitor. 
     
     
       6. An efficient power supply/charger as in  claim 2  wherein said power output component comprises of a R-C snubbing network to reduce EMI. 
     
     
       7. An efficient power supply/charger comprising:
 an input protection means to protect an input voltage from short circuit in the power supply/charger; 
 a surge regulation means to regulate the input voltage; 
 a voltage controlling means to control an output voltage; 
 a current limiting means to limit a current through the power supply/charger; and 
 a cable compensation means to compensate the voltage drop through a cable. 
 
     
     
       8. An efficient power supply/charger as in  claim 7  wherein said voltage controlling means further comprises of a power output means and a gate drive. 
     
     
       9. An efficient power supply/charger as in  claim 7  wherein said input protection means comprises of a 2 amp positive temperature coefficient thermistor. 
     
     
       10. An efficient power supply/charger as in  claim 7  wherein said input protection means comprises of a positive temperature coefficient thermistor trace fuse. 
     
     
       11. An efficient power supply/charger as in  claim 7  wherein said input protection means comprises of a 1 uF capacitor. 
     
     
       12. An efficient power supply/charger as in  claim 8  wherein said power output means comprises of a R-C snubbing network to reduce EMI. 
     
     
       13. An efficient power supply/charger comprising:
 an input protection means to protect an input voltage from short circuit in the power supply/charger; 
 a surge regulation means to regulate the input voltage; 
 a power output means to control the output from the power supply/charger; 
 a gate drive to perform logic operations; 
 a current limiting means to control the current through the power supply/charger; and 
 a cable compensation means to compensate the voltage drop through a cable. 
 
     
     
       14. An efficient power supply/charger as in  claim 13  wherein said input protection means comprises of a 2 amp positive temperature coefficient thermistor. 
     
     
       15. An efficient power supply/charger as in  claim 13  wherein said input protection means comprises of a positive temperature coefficient thermistor trace fuse. 
     
     
       16. An efficient power supply/charger as in  claim 13  wherein said input protection means comprises of a 1 uF capacitor. 
     
     
       17. An efficient power supply/charger as in  claim 13  wherein said power output means comprises of a R-C snubbing network to reduce EMI.

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